# yarn
# 常用命令
yarn global <add/bin/ls/remove/upgrade> [--prefix]
# yarn add: add a package to use in your current package.
# yarn bin: displays the location of the yarn bin folder.
# yarn ls: list installed packages.
# yarn remove: remove a package that will no longer be used # in your current package.
# yarn upgrade: upgrades packages to their latest version
# based on the specified range.